The Auckland Teal is smaller and raker than the Brown Teal of the main islands of New Zealand, a species with which it was once considered conspecific. The plumage is all over brown with a hint of green on the neck and a conspicuous white eyering. The female is slightly darker than the male. The wings are very small and the species has, like the related Campbell Island Teal, lost the power of flight.

The Auckland Teal is mostly crepuscular to nocturnal, preferring to hide from predators (New Zealand Falcons and skuas) during the day. The species inhabits a variety of habitats with the islands, including tussockgrass fields, megaherb shrubland and coastal waters. It is carnivrous for the most part, feeding on marine invertebrates, insects, amphipods and other small Invertebrates. The Auckland Teal are territorial and seldom form flocks.

References

Hector, J. (1896). "Dr Collins' testimony of a Snares Island duck" Transactions and Proceedings of the New Zealand Institute29: 614.......